Moderator: Greg Barlow
Missed the line running back.luis wrote:I see a couple of major differences from an Aquarius.
The air passage to the back of the piston is not through the piston. You can see an air passage from the LP port.
Also the HP seat seems to be an independent floating secondary piston. It looks like there is possibly a balancing chamber just below the HP seat carrier. Is this supposed to be a balanced piston regulator?
Is there a part break down?
The IP has to track the ambient/ external pressure in order for any second stage to work properly. We are not seeing the ambient pressure holes, but I am sure they are there, somewhere on the circumference around the large spring (the wet chamber).lexvil wrote:Missed the line running back.luis wrote:I see a couple of major differences from an Aquarius.
The air passage to the back of the piston is not through the piston. You can see an air passage from the LP port.
Also the HP seat seems to be an independent floating secondary piston. It looks like there is possibly a balancing chamber just below the HP seat carrier. Is this supposed to be a balanced piston regulator?
Is there a part break down?
Interesting, I'm not regulator expert by any means, it does look like an internally equalized steam regulator with that small line running Back to the piston. I would assume it is sealed and works to maintain set pressure regardless of external pressure??
Thanks for the information! Any chance you can send me a PDF of that catalog? Actually I'd appreciate any catalogs you could share.vintagefrank wrote:Hi Bryan,
that´s not a Pro Diver first stage but a La Spirotechnique Club first stage as can be seen in their 1989 catalog page 8. This first stage was a piston operated first stage.
The EXPLORER regulator came out in 1983 in two versions with a second metallic stage. The standard version and the R version which always means a second stage with a sensitivity device. The first stage is a balanced piston mechanism with one output HP and 3 outputs MP.
The SPIRO CLUB was released in May 1980 to replace the series 20. Robust and reliable, built as a "tank", the SPIROTECHIQUE launches it on the market to compete directly the MK2 R190 SCUBAPRO. A very good regulator piston mechanism but which will not happen to dethrone his rival.
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